In iTunes I've bought Album "A" that has "track 2." More recently I purchased Album "B" which also has "track 2" but it will not download stating that I already have it as part of Album "A"
Never seen this before. They are different tracks from different albums (even if they are the same song). It's no different than buying a regular album and a greatest hits album. The greatest hits will have 2-3 songs from the regular album but you still get all the tracks on the greatest hits.
Which albums & song?
Both of these are purchased in iTunes store?
The artist is Skylar Grey - the first album is "Buried Sessions of Skylar Grey" and track 1 is "Love the Way You Lie" ... this week I purchased the second album "Don't Look Down" and track 6 is the same song. When I purchased it it gave me a pop-up saying because I own the song on the first album, it wouldn't download it. I've tried looking through all the iTunes options (menu bar) and r-clicking on the album itself and I see nothing that would allow me to download the missing track.